CVE-2020-17498

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-08-13 · updated 2026-06-17
Weakness: CWE-415

Description

In Wireshark 3.2.0 to 3.2.5, the Kafka protocol dissector could crash. This was addressed in epan/dissectors/packet-kafka.c by avoiding a double free during LZ4 decompression.

Affected products

Fedoraproject Fedora: 31, 32
openSUSE Leap: 15.1, 15.2
Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8
Wireshark Foundation Wireshark: from 3.2.0 before 3.2.6 — fixed in 3.2.6

How to fix

Upgrade to a fixed version: Wireshark Foundation Wireshark 3.2.6. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16672
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=76afda963de4f0b9be24f2d8e873990a5cbf221b
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AII7UYDPNKYE75AZL45M6HAV2COP7F6S/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7LO7DAPN33FL4JQ7DDPB76SIEFGMZSQ/
https://security.gentoo.org/glsa/202008-14
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.wireshark.org/security/wnpa-sec-2020-10.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16672

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